19725280

素因数分解:

$2^5\times 5^1\times {\mathrm{113}}^1\times {\mathrm{1091}}^1$

素因数の和:1219

約数の個数: 48

約数和(自身を含む): 47056464

約数和(自身を除く): 27331184

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 113, 160, 226, 452, 565, 904, 1091, 1130, 1808, 2182, 2260, 3616, 4364, 4520, 5455, 8728, 9040, 10910, 17456, 18080, 21820, 34912, 43640, 87280, 123283, 174560, 246566, 493132, 616415, 986264, 1232830, 1972528, 2465660, 3945056, 4931320, 9862640, 19725280]

約数ペア:

[(1, 19725280), (2, 9862640), (4, 4931320), (5, 3945056), (8, 2465660), (10, 1972528), (16, 1232830), (20, 986264), (32, 616415), (40, 493132), (80, 246566), (113, 174560), (160, 123283), (226, 87280), (452, 43640), (565, 34912), (904, 21820), (1091, 18080), (1130, 17456), (1808, 10910), (2182, 9040), (2260, 8728), (3616, 5455), (4364, 4520)]